JPS5992273A - Working vehicle - Google Patents

Abstract

PURPOSE:To prevent a vehicle body from overturning by an unbalanced load due to a working load, by actuating a safety device when a load difference between the right and left of the titled vehicle becomes more than a predetermined value by detecting a load of a running device. CONSTITUTION:Load sensors 13a-13d are provided on running devices 1, 2 longitudinally and laterally, and a lateral load difference of more than a predetermined value is detected by comparison circuits 16a, 16b. A longitudinal load difference is detected also by averaging circuits 20a, 20b and a comparison circuit 21. Based on a detected result, a driver is alarmed by operating a buzzer 19. Overturning can be prevented reliably as not only an inclination of a vehicle body but also an unbalanced load due to a working load is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION KIHATSU 1" 1 relates to various work vehicles such as agricultural and q (general use).

■-In the article Jutun (8) To create a safety device for preventing falls, conventionally, the left and right tilt angle of the vehicle body is directly detected using an ionization type tilt sensor, and based on the detection result. Various safety devices such as alarm systems were activated.

However, if an unbalanced load is applied to the left and right traveling device due to the work load or the weight of the off-cent type work equipment, the iB body may fall over due to the unbalanced load. There were four situations in which it was not possible to accurately detect whether the vehicle was in a position to overturn, which could lead to an unexpected overturning accident.

In view of the above-mentioned conventional situation, the purpose of Kihatsu IJJ is to detect whether or not the vehicle is in a state of overturning under any working conditions by using a rational detection method.
i Vtc can be detected to effectively improve safety.

A characteristic configuration of the present invention is that a sensor is provided to detect the weight of the aircraft body on the left and right traveling devices, and based on information from the sensor, the airframe n of the left and right traveling devices is determined. A safety device is installed that activates when r'mzf exceeds a set value.
Its action and young fruit are as follows.

In addition, by activating the safety device based on the height difference between the left and right traveling devices, the work load can be reduced not only when the vehicle body is tilted to the left or right, but also when the left and right tilt angle of the vehicle body is small. When the vehicle body is in a position where it is likely to fall due to unbalanced load caused by the weight of the connected work equipment, etc., the safety device can be activated appropriately, and compared to the conventional configuration that directly detects the angle of inclination. This has made it possible to reliably prevent labor and disasters.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in Figure 1, the fuselage frame is equipped with a pair of left and right steering front wheels (1) and a pair of steering rear wheels (2). Hook part (4), Tou operation part ([1)
, a rear transmission case part (6) is provided, and a rotary tilling device fBl is installed at the rear of the riding tractor (composing N and its tractor A), and a Yu-O cylinder ( 8), the working power from the N side force λ is connected to the tractor (N side force λ) through the movable shaft (9), which can be raised and lowered freely, and a riding type tiller is constructed. It is.

This riding tractor (Al) is equipped with a fall prevention IE safety device, and the safety device will be described in detail below with reference to FIGS. 2 and 3.

Each wheel/axle (10) of the front wheel (1) and rear wheel (2)
Bearings for vehicle bearings)11)
There is an axle (1
h & pressure element type sensors (13a') (13b) (13c) [13d) for detecting the aircraft load acting on A potentiometer type sensor 15) for detecting the steering angle 17Jh of the front wheel (1) is attached to 14a). Then, for each of the front and rear heavy wheels (1) and (2), the number of left and right heavy wheels (1
3a), (13b), (13c), and (13d) to determine whether the difference in the detected R claw is greater than or equal to a set value.
A second comparison circuit (16a) (16b) is provided, and the first and second comparison circuits (16a') (16b) are connected to two 01 circuits (17a) (r17b) and an amplifier ll.
8) to the alarm buzzer (19), and the 1 front and rear cars 1'Ii! fl) (A warning buzzer sounds when the difference between the left and right aircraft loads on one or both of 21 exceeds the set value.
I! FI is activated to notify the driver of the risk of rollover.

In addition, the left and right leisure sensors (13a M 13b)
・The detected load by (13c) (13d) is 1r+
i wheel tl) +2) 1st averaged for each separately. A second averaging circuit (20a) (20b) is provided, and it is determined whether the average load ρ of the two averaging circuits (20a) (20b) is greater than or equal to the set value. ! - Third comparison circuit 121 for determining
) to the 01 circuit (], 7b) on the lower side of the signal/Tawarada out of the two 01 circuits (17a) (17b) written in 6fl 1
7. In addition to the rollover risk warning mentioned in the PL, the front and rear wheels (+) 21st left and right average aircraft load is greater than the set value J:
Even when it becomes VC, the NFJ period Budabday 110 is activated, and the danger of the aircraft falling back and forth when, for example, λ + l'j 3 is turned, is well-understood.

11f1 Kiku comparison circuit (16a) (16b) [211
%-1y> to set the reference value for comparison, n
rr steering wheel! Based on the information from the 71 tilt angle detection sensor (15), 8Jt, OCZ circuit (16a)
(16bN2) Setting device 12 that automatically corrects the set value in 1 to an appropriate value according to the steering angle i1.
z is provided, so that the buzzer t1 can be activated even during steering when the aircraft stability multi-layer condition at each wheel ++) +21 is newly generated.
(G) is configured to operate appropriately according to the condition of QVVc.

In addition, in order to detect the body load on the left and right traveling device i1 +21, a pressure sensitive element or the like is used (instead of directly detecting the body load), an axle support case lI21 or, in the case of a crawler traveling device, a track lift is used. It is possible to adjust the force of various configuration changes, such as installing a strain gauge on the L/-, etc., and detecting changes in the case and frame due to changes in the aircraft's weight and indirectly detecting the aircraft's load. , the detection structure is collectively referred to as the sender (1:Ill), and those sensors f1
Based on the information from 3), safety devices to prevent the aircraft from tipping over (a) and (H, rap) ij, instead of various notification devices such as buzzers and lamps, automatic travel stop devices and steering operation ports! The i-force restraint system, a certain L/1, is to apply various devices such as geometric support devices such as outriggers, and furthermore, J^ to the information from the sensor (13).
Automatically activate those safety devices by force! The J sub-device also has various combing changes of III fil 7.

Furthermore, the aircraft direction angle detection mechanism is ``(1lfi),
In addition, based on the detection result, Jj (following the safety device (19)
Set the operation setting value to white (ii
i +22] also has 1j f112 with various configuration changes.

It is intended to target various types of work @i↑L such as construction and agriculture where morning i-do line equipment is scarce.

[Brief explanation of the drawing]

The drawings show an example of the ゛R implementation for work related to January 1, 2017, and Figure 1C shows the overall side view, and No. 21゛4 shows the safety device operating structure and ('l': df'7 circuit). Fig. @3 is a cross section showing the sensor mounting structure 1) 1). .

Claims (1)

[Claims] ■ Left and right ten rows (if fl), (a sensor for detecting the aircraft load on 21 (1:1 ratio is provided, the sensor 1
According to the information from 131, the left and right traveling device +1+
, When the aircraft M time difference between +2+ becomes north of the set value,
Safety gear for J! A work vehicle characterized by I (i:'j fl9). (21Fifl safety equipment j:q i+9) corrects the set value by itself with Jll;b in the detected value of the aircraft orientation angle. A working vehicle according to claim 2, characterized in that it is equipped with an arithmetic unit (2η).